Gemstone



FIG. 1 is a top view of a diamond, showing a small-table version of a first embodiment of my new design;

FIG. 2 is a side view of a diamond, showing a small-table version of the first embodiment of my new design;

FIG. 3 is a top view of a diamond, showing a small-table version of a second embodiment of my new design;

FIG. 4 is a side view of a diamond, showing a small-table version of the second embodiment of my new design; and,

FIG. 5 is a bottom view of the diamond of either of the embodiments of the present invention. 

The ornamental design for a gemstone, as shown and described. 